Emery-wheel drive in machines for grinding, turning, and finishing shafts, piston-rods, pins, tools, &amp;c.



A. MACDONALD. EHERY WHEEL DRIVE IN MACHINES FOR GRINDING, TURNING, AN'DFINISHING SHAITS,

PISTON RODS, PINS, TOOLS, 6w.

APPLICATION TILED APR. 2,1907.

916,174, Patented Mar. 23, 1909.

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ATTORNEVS a vertic UNITED STATES PATENT op nion.

ALFRED MACDONALD, OF WHITEINCH, SCOTLAND.

EMERY-WHEEL DRIVE IN MACHINES FOR GRINDING, TURNING, AND FINISHINGSHAFTS, PISTON-RODS, PINS, TOOLS, &c.

No. 916,174. Specification of Original application filed June 4, 1906,Serial No. 320, Serial No To all whom it may concern:

Be it known that I, Amnnn \iAcnoNALn, engineer, a subject of the King ofGreat Britain and Ireland, and a resident of Whiteinch, Lanarkshire,Scotland, have invented certain new and useful improvements in theemery-wheel drive in machines for grinding, turning, and finishingshafts, piston-rods,

ins, tools, and other machined work, of which the following is aspecification, constituting a divisional application for the band driveto emery-wl'ieeis described in my pend-- ing application, Serial No.320,143, filed June 4, 1906.

This invention has reference to improvements in the emery wheel drivenin machines for grinding, turning, and finishing shafts, rods, pins,tools and other machined work, and the principal object is to produce auniversal drive to emery wheel such that said wheel can advance orrecede or swing around to any angle while it is revolving for thepurposes of grinding, turning or finishing articles. And in order thatmy said invention and the manner of carrying same into practice may beproperly understood 1 have hereunto appended explanatory drawings inwhich Figures 1 and 2 are a side elevation and plan view res eetively ofa universal drive to emery whee from the main internal shaft, in whichthe emery wheel lease carrying the emery wheel can advance or recede, orswing around to any angle while it is being revolved for the purposes ofgrinding, turning and finishing articles, while l ig. 3 is a sideelevation corresponding to Fig. 1 of a plain drive in which the emerywheel base carrying the emery Wheel can only advance or recede to orfrom the work while the emery wheel is revolving.

Referring to Figs. 1 and 2 :The main internal shaft a receives itsmotion from the headstock of an ordinary machine of this class in theusual well known manner and motion is conveyed from this shaft a to theemery wheel s indle 15, on which is mounted the emery w reel, as follows:A belt 16 passes over pulley 17 secured on shaft a then over one of thetwo guide ulleys 1S and drives a pulley 19 keyed to tiie lower end of ashaft 1 the belt 16 then returns over the other guide pulley 18. On theother end of vertical shaft 1, a pulley 20 is Letters Patent. PatentedMarch 23, 1909.

143. Divided and this application filed April 2, 1907.

secured and a belt 14 passes around this pulley 20, around one of thetwo guide pulleys 2], around pulley 123 at rear of emery wheel base 4and drives the emery wheel spindle 15, while the belt returns over theother guide pulley 21.

A slot 8 would be cast in the emery wheel base 4 to permit the emerywheel to advance or recede and the belt 14 would always be at a uniformtension while the emery wheel base 4 was advancing or receding, orswinging around to any desired angle. The emery wheel base 4 would beadvanced or receded or swung around as required in the usual well knowmanner.

In the arrangement shown in Fig. 3, the emery wheel base 4 has only a toand fro transverse motion and the belt 1 4 passes around the pulley 17on .rnain internal shaft o and over guide pulleys 21 supported onbrackets which would be mounted on the usual main slide. "his belt 14further passesaround thepulley 13 and drives the emery wheel spindle 15.A slot 8 would be cast in emery wheel base 4 to permit the emery wheelbase 4 carrying the emery wheel to advance or reccdo with the belt 14 ata uniform tension.

What I claim is 1. In a machine of the character described, a toolsupport with slotted base adapted to be advanced and receded during therotation of the tool, a main internal driving shaft, and means passingthrough said slotted base for imparting rotary motion from the latter tothe tool carried by the support.

2. In a machine of the character described, a toolsupport with slottedbase adapted to be advanced and receded during the rotation of the tool,a main internal driving shaft and flexible means for imparting rotarymotion from the latter to the tool carried by the support, said drivingmeans passing through said slotted base of the latter.

3. In a machine of the character described, a main internal drivingshaft, a pulley on the same, an endless belt passing around said pulleyand means in connection therewith for driving a rotary tool, incombination with a sliding support for said tool having a slotted baseand adapted to be advanced and receded during the rotation of the tool,said help passing through the slotted base of said too a movable toolsupport having a slotted base, In testimony whereof I have signed my aspindle passing through said slotted base, name to this speeifioation,inthe presence of 10 a main internal driving shaft and means for twosubscribing Witnesses.

trensmitting from the latter through said A. MAODONALD spindle rotarymotion to a tool earned by the support, said support being adapted toWitnesses:

begin a rotary as Well as a reciprocating R. C. THOMSON,

movement during the rotation of the tool. T. B. BROWNLIE.

